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首页> 外文会议>Iron ore 2011 >Investigation of Mixing and Rolling Drum Performance at Port Kembla's Sinter Machine Through Full-Scale Sampling and Laboratory Scale Experiments
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Investigation of Mixing and Rolling Drum Performance at Port Kembla's Sinter Machine Through Full-Scale Sampling and Laboratory Scale Experiments

机译：通过全尺寸采样和实验室规模实验研究端口Kembla烧结机的混合和滚动鼓性能

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摘要

BlueScope Steel's Port Kembla sinter machine underwent a major upgrade during mid-2009.rnThe mixing and rolling drum (MRD) was thoroughly cleaned during the upgrade. Space factorrnmeasurements taken in October 2009 showed that the drum was operating in the cataract regimernin the dry mixing section and the cascading regime in the rolling section, which is optimal forrngranulation. Sampling carried out during an entry into the MRD showed that both the Sauterrnmean diameter and the predicted bed voidage increase rapidly during wetting, and then decreasernin the wet mixing section. In the rolling section, the granule properties remained constant untilrnthe drum discharge. Frozen particle analysis, using liquid nitrogen as the quenching agent, wererncarried out on material collected from the MRD discharge. The results, expressed as a GranulationrnIndex, showed there had been a signifi cant improvement in the granulating performance of thernMRD following the upgrade. The plant studies were also complemented with laboratory scalernexperiments which aimed to optimise the granulation process. The effect of burnt lime on greenrnfeed permeability was quantifi ed using the laboratory scale drum at different moisture contents. Arnsignifi cant increase in permeability was apparent once the burnt lime dosing rates doubled fromrn1.1 - 2.2 per cent w/w (feed basis). The capacity of the burnt lime system at the sinter machine willrnbe increased in order to benefi t from the expected higher permeability, permeability, which willrnenable the machine to sinter at deeper bed heights.
机译：博思格钢铁公司的Port Kembla烧结机在2009年中期进行了重大升级。rn升级过程中彻底清洁了混合和转鼓（MRD）。 2009年10月进行的空间因素测量表明，转鼓在干混段的白内障状态下运行，在滚动段的串级下运行，这是最佳的制粒过程。在进入MRD期间进行的采样显示，在润湿过程中，索氏平均直径和预计的床空隙率均迅速增加，然后在湿混区减小。在轧制区，颗粒性质保持恒定，直到转鼓排出为止。使用液氮作为淬灭剂，对从MRD排放物收集的物料进行了冷冻颗粒分析。结果以GranulationrnIndex表示，表明升级后rnMRD的造粒性能有了显着改善。植物研究还辅之以旨在优化制粒过程的实验室规模试验。使用实验室刻度鼓在不同的水分含量下，对生石灰对生料渗透性的影响进行了定量。一旦烧石灰的投加量从1.1％-2.2％w / w（以饲料为基准）翻倍，则渗透率的明显增加就很明显。为了从预期的更高的渗透性，渗透性中受益，将增加烧结机上的生石灰系统的能力，这将使机器能够在更深的床层高度进行烧结。

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  • 来源
    《Iron ore 2011》|2011年|p.475-483|共9页
  • 会议地点 Perth(AU)
  • 作者

    D Maldonado; R Davis; S Haehnel; P Drain; J Heslin;

  • 作者单位

    BlueScope Steel Research, PO Box 202, Port Kembla NSW 2505. Email: daniel.maldonado@bluescopesteel.com;

    BlueScope Steel Ironmaking Department, Five Islands Road, Port Kembla NSW 2505. Email: robert.davis@bluescopesteel.com;

    RWTH Aachen University, Aachen, Germany. Email: Sebastian.Haehnel@rwth-aachen.de;

    Formerly: BlueScope Steel, Ironmaking Department;

    BlueScope Steel, Ironmaking Department, Five Islands Road, Port Kembla NSW 2505. Email: john.heslin@bluescopesteel.com;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
  • 关键词

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